LOINC Code 83113-1: Free PSA IA [Mass/Vol]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Prostate specific Ag.free. It is commonly used with the system or sample type Ser/Plas.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Both
• Method: IA

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Prostate Specific Ag Free [Mass/volume] in Serum or Plasma by Immunoassay
• Prostate specific Ag.free
• This term was created for, but is not limited in use to, bioMerieux's VIDAS FPSA assay, which is intended for the quantitative measurement of the free fraction of prostate specific antigen (PSA) in human serum or plasma.
• Chemistry; EIA; ELFA; ELISA; Enzyme immunoassay; fPSA; FR; Genitourinary; GU; IAA; Kallikrein 3; Level; Mass concentration; MEIA; Non-protein bound; Oncology; P-30 antigen; Pl; Plasma; Plsm; Point in time; PS; PSA; PSA Free; QNT; Quan; Quant; Quantitative; Random; Seminin; SerP; SerPl; SerPlas; Serum; Serum or plasma; Spec; SR; SUDS; Tumor marker; URO; Urology

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions